%0 Generic %D 2011 %T New stomatal flux-based critical levels for ozone effects on vegetation. %A Mills, G. %A Pleijel, H. %A Braun, S. %A Buker, P. %A Bermejo, V. %A Calvo, E. %A Danielsson, H. %A Emberson, L. %A Gonzalez Fernandez, I. %A Grunhage, L. %A Harmens, H. %A Hayes, F. %A Karlsson, P.E. %A Simpson, D. %B Atmospheric Environment %V 45 %P 5064-5068 %G eng %0 Book %D 2002 %T Growth of Norway spruce (Picea abies) in relation to the AOT40 index. %A Skarby, L. %A Ottoson, S. %A Karlsson, P.E. %A Wallin, G. %A Sellden, G. %A Medin, E. %A Pleijel, H. %9 Background paper presented at the UNECE Workshop Establishing Ozone Critical Levels II, Goteborg November 2002